Technical data

VLT 5000/5000 FLUX SyncPos Quick-Setup
MG.10.Q1.5B – VLT is a registered Danfoss trade mark28
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■ Encoder monitor
Both encoder interfaces are equipped with a moni-
toring circuit that can detect open circuit as well as
short circuit of each encoder channel. Each
encoder channel has a LED showing the status:
Green light means ok, no light means fault. Zero
channel monitoring can be switched off by means of
switch 1.4, this is necessary when using incremen-
tal encoders without Zero channel or absolute
encoders. Switch 1.4 disables monitoring of both
master and slave Zero channel. If disabling of only
one of the two Zero channels is required (e.g. when
using incremental master encoder and absolute
slave encoder) the unused Zero channel input must
be connected to 5V/common as shown below.
An encoder fault will only result in an ”Option error”
calling the error handler (ON ERROR) if encoder
monitoring is activated via parameter MENCODER
(master) and ENCODER (slave).
Note: Monitoring of the master encoder is disabled
when switch 1.3 is ”OFF”.
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■ Supply voltages:
The option card is supplied by the internal 24 V DC
supply of VLT 5000, but as the available power is
limited it can be necessary to use an external 24 V
DC supply.
The 24 V DC supply of VLT 5000 can supply a total
of 420 mA including the load on the control card
(terminal 12, 13 and output 42 and 45).
The 5 V output on the option card is generated from
the 24 V supply. The maximum power on the 5 V
side is 5 V * 280 mA = 1.4 W, this corresponds to
app. 60 mA on the 24 V side.
When an external 24 V DC voltage source is used
the internal 24 V supply from the control card must
be disconnected, this is done by opening switch 1.1
and 1.2
Each digital input on the option card takes 8 mA.
Each digital output on the option card can supply up
to 0.7 A (external 24V-supply) depending on the
load.
The load from the 24 V supply (internal or external)
can be calculated as follows:
8 mA * number of digital inputs
+
Load on digital outputs
(mk3 C, O1 – O8)
+
load on 5 V supply
(mk3 B/D, 5 V/com)
+
Load on control card
(24 V supply, terminal 12/13 and
outputs, terminal 42/45)
Technical Data/Wiring examples